LITTLE ROCK (AP) — The son of Wal-Mart founder Sam Walton denies allegations that he broke campaign finance laws in 2008 and wants a union-backed anti-Wal-Mart group to apologize and withdraw the complaint.

A spokesman for Jim Walton told the Arkansas Democrat-Gazette http://bit.ly/PD536q that Walton has always been in full compliance with federal campaign contribution limits.

The group that filed the complaint with the Federal Election Commission — Making Change at Walmart — says it stands by its claim and wants the FEC to investigate.

Walton’s attorney has asked the FEC to dismiss the claim. Lawyer Steven Lucas says the group mistakenly double-counted $4,300 in contributions to a committee associated with Sen. John McCain’s presidential campaign.

An FEC spokesman says the agency has not received either the complaint or the response.